Audio speaker



FIG. 1 is a perspective view of an audio speaker showing our new design:

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof; and,

FIG. 6 is a top plan view thereof.

The bottom of the audio speaker is plain and unornamented. 

We claim the ornamental design for an audio speaker, as shown and described. 